$(document).ready(function() {
	
	var timer;
	var down = true;
	$(document).mousemove(function() {
	
		if (timer) {
			window.clearTimeout(timer);            
			timer = 0;
		}
		if(down) {
			$('.back-forward div').fadeIn();
			down = false;
		}
		timer = setTimeout(function() {
			$('.back-forward div').fadeOut();
			down = true;
		}, 1000);

	});
	
});